M16 / M4 / AR Carry handle rail adapter

thingiverse

I couldn't find a suitable mount, so I created my own using 3D printing technology. It should work well for paintball and airsoft applications, but I'm not confident in its reliability for real firearms or high-end optics. The rail dimensions are likely to be accurate, accommodating most carrying handles, but some sort of screw and nut assembly will be necessary for secure attachment. The screw hole measures 4.5mm across the shaft and 8mm at the head, requiring a minimum length of 30mm for proper installation.